Yes. In MLB, a player who starts the game as the DH may be inserted into the game as a fielder. If this is done, the team loses the ability to use a DH and the pitcher must be inserted into the batting lineup.
Once the DH moves to a defensive position the DH is no longer allowed in the lineup. In that case, the pitcher would assume the position in the batting order of the defensive player replaced by the DH.
There is a DH if the game is played in the American League team's ballpark. There is no DH if the game is played in the National League team's ballpark.
Once the DH takes a defensive position in the field, his team can no longer use a DH.
Yes. The DH hits for the pitcher and if the DH enters the field of play the pitcher then has to hit for himself
MLB rule 6.10(b) states, in part: ...Once the game pitcher is switched from the mound to a defensive position this move shall terminate the Designated Hitter role for the remainder of the game... So, in response to the question, the team loses the DH permanently (for the rest of that game).
Yes.Through the 2009 season, Ichiro has played 25 career games at DH. In the 2009 season, he was DH in 1 game, the July 8 game against the Baltimore Orioles played in Seattle.
Yes. There is no obligation to use the DH in baseball. A somewhat confusing question. A relief pitcher can be used AS the DH. However normal DH rules apply and that player could not pitch in the game. A relief pitcher can pinch hit FOR the DH as well. That pitcher then becomes the DH and normal rules apply. I am pretty sure that a relief pitch that enters the game as a pitcher can not be inserted into the lineup for the DH but I could be wrong. Of course you don't have to use the DH but you can't use a relief pitcher in your lineup unless he's playing a position in the field. Yes. When you bring in the relief pitcher, you can at that time have him hit in place of the DH. You can also have him pinch-hit for the DH at a later point in the game. Note that in both cases, there is no longer a DH and all pitchers must hit. Baseball rule 6.10.
In MLB, games between two American League teams always use the DH and games between two National League teams do not use the DH. When a team from the American League is playing a team from the National League, the rules used are those of the home team's league. If the home team is an American League team, the DH is used. If the home team is a National League team, the DH is not used.
No. The DH cannot play a defensive position unless he is brought in for the person for whom he is DH-ing. This is a full substitution and negates the DH status. Should the coach re-enter the original player, he must bat in place of the original DH, and the original DH may not re-enter the game.
yes...if the DH is replaced
The American League (yankees, redsox, whitesox ect) during interleague play the rules are determined by who the home team is and at the MLB all-star game they always have a DH because it allows more people to get into the game